US 11,053,013 B2
Unit for generating non-propulsive electrical power
Stephane Richard Dominique Vaillant, Fonbeauzard (FR); Mickael Faucher, Grenade (FR); and Christophe Turpin, Toulouse (FR)
Assigned to SAFRAN POWER UNITS, Toulouse (FR); INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE, Toulouse (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Filed by SAFRAN POWER UNITS, Toulouse (FR); INSTITUT NATIONAL POLYTECHNIQUE DE TOULOUSE, Toulouse (FR); and CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR)
Filed on Dec. 15, 2017, as Appl. No. 15/843,573.
Claims priority of application No. 16 62480 (FR), filed on Dec. 15, 2016.
Prior Publication US 2018/0170564 A1, Jun. 21, 2018
Int. Cl. B64D 27/24 (2006.01); F01D 15/10 (2006.01); F02C 3/00 (2006.01); F02C 3/04 (2006.01); B64C 27/22 (2006.01); B64D 13/06 (2006.01); F02C 7/08 (2006.01); F02C 7/32 (2006.01); B64D 27/02 (2006.01); B64D 41/00 (2006.01)
CPC B64D 27/24 (2013.01) [B64C 27/22 (2013.01); B64D 13/06 (2013.01); F01D 15/10 (2013.01); F02C 3/00 (2013.01); F02C 3/04 (2013.01); F02C 7/08 (2013.01); F02C 7/32 (2013.01); B64D 2027/026 (2013.01); B64D 2041/002 (2013.01); F05D 2220/50 (2013.01); F05D 2220/76 (2013.01); F05D 2270/03 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A unit for generating non-propulsive electrical power for use on board an aircraft, the unit comprising:
an electricity production device including a gas turbine, and an electricity generator mechanically connected to an outlet shaft of the gas turbine, said electricity generator including output electrical connections to be electrically connected to an electrical power supply network on board the aircraft;
energy storage means comprising a battery;
regulator means configured to control the speed of rotation of the gas turbine as a function of the electrical power required by the on-board electrical power supply network, the regulator means receiving feedback from the on-board electrical power supply network to control the speed of rotation of the gas turbine as the function of the electrical power required by the on-board electrical power supply network;
second power converter means connected between the energy storage means and the electricity production device, the second power converter means comprising
a mechanical transmission gearbox coupled to the outlet shaft of the gas turbine and including a mechanical coupling shaft, and
an electrical machine mechanically coupled to the mechanical transmission gearbox via the mechanical coupling shaft and electrically coupled to electrical terminals of said energy storage means; and
power management means comprising
a first module configured, in a first mode, to cause at least part of power produced based on operation of the electricity production device to be recovered and stored in said energy storage means, and
a second module configured, in a second mode, to cause the on-board electricity power supply network to be powered by both electricity produced from the gas turbine and energy from the energy storage means when electricity required by the on-board electricity power supply network is greater than a predetermined threshold,
wherein the power management means is configured to
actuate the first module when the speed of rotation of the gas turbine is at a maximum and the level of charge in the energy storage means is below a charge threshold so that the electrical machine delivers energy to the energy storage means, and
actuate the second module when electricity required by the on-board electricity power supply network is greater than the predetermined threshold by using the enemy stored by the energy storage means to operate the electrical machine to rotate the outlet shaft of the gas turbine via the mechanical transmission gearbox and the mechanical coupling shaft so as to assist acceleration of the gas turbine.